Speed Up Audio 1.25x
100% free, fast, and runs entirely on your device. No sign up required.
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Why speed up audio to 1.25x?
Sometimes you need to get through a long podcast, an audiobook, or a boring recorded lecture, but you just do not have the time. Speeding up the audio by 25 percent is the perfect balance. It makes the speaking much faster, but it is still completely understandable.
If you push it to 1.5x or 2x, people start sounding like chipmunks and it is hard to follow. 1.25x just feels like the person is talking with a lot of energy.
How to accelerate your file
Just drop your audio file into the upload zone. The tool is already set to increase the tempo by exactly 25 percent. We process the file instantly on your device without needing to upload anything to a server.
Once it is done, download the file to your phone or computer. You just saved yourself 15 minutes on a one-hour lecture.
Frequently Asked Questions
Will the voices sound squeaky?
We use a pitch-correction algorithm by default for spoken word files, so the voices will stay at their normal pitch, they will just be talking much faster.
Is 1.25x fast enough for a lecture?
1.25x is perfect for dense material where you still need to comprehend everything. It saves you 15 minutes for every hour of audio without making the speaker sound frantic.
Can I speed up a song without changing the pitch?
Yes, but for music, time-stretching often introduces strange, metallic "warbling" artifacts. It is usually better to let the pitch shift up naturally if you are speeding up a song.